Matthias millbe



(No Model.)

M. MILLER.

COUPLING BOLT.

No; 331,425. Patented Dec. 1, 1885.

WITNESSES UNITED STATES PATENT OFFICE.

MATTHIAS MILLER, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR OF ONE-HALF i TO GEORGE N. DAVIS, OF SAME PLACE.

COUPLING-BOLT.

SPECIFICATION forming part of Letters Patent No. 331,425, dated December 1,1885.

Application filed April 20, 1885. Serial No. 162,891.

To all whom it may concern:

Be it known that I, MATTHIAS MILLER, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Coupling Bolts; and I do declare the following to'be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures oi reference marked thereon, which form a part of this specification.

Figure l is a side view, with sectional view of nut. Fig. 2 is a plan view showing operation of nut-lock c. Fig. 3 is a view in perspective of unthreaded half of bolt. Fig. 4 is a side view of a thill-coupling having my invention. Fig. 5 is a plan View of such coupling.

Similarletters refer to similar parts throughout the several views.

Theobjectofmyinventionisto provideabolt the diameter of which is enlargeable at pleasure. I accomplish my purpose'in the following manner, to wit: I make a bolthaving two parts, D and H, cut diagonally, making said parts wedge-like in shape, (see Fig. 1,) and placed together on their cut faces. The part D has the enlarged flaring butt I and the threaded end 0. The part H has the head F slotted so as to form the neck L and shoulder G, (see Fig. 3,)and is punctured to receive the wire 0, which, being bent over the nut E, forms a look, as shown in Fig. 2. The nut E being placed on the neck L and the thread (No model.)

end 0 inserted, the screwing up of the nut draws up the part D and increases the diameter of the bolt. i

In Figs. 4 and 5, A represents the head of a clip of thill-coupling, K the shank, and J the thill.

It will be seen that by the use of such a bolt as I have described any coupling which has become worn and rattling may be tightened and made silent by a few turns of the nut.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. As a new article of manufacture, a bolt cut diagonally in the direction of its. length, forming two parts wedge-like in shape, one of said parts having the thread end 0 and the butt I, and the other part a slotted head to receive the nut E, as shown and described.

2. A bolt cut diagonally in the direction of its length in two parts, wedge-like in shape, in combination with the nut E and the locking-wire c, as shown and described.

3. A bolt constructed of the wedge-shaped parts D and H, one of said parts having the butt I and the thread end O, and the other of said parts the slotted head forming the shoulder G and neck L, in combination with the nut E and the locking-wire c, all substantially as shown and described, and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MATTHIAS MILLER.

IVitnesses:

ADOLPH B. Mason, WM. A. CHAPMAN. 

